Antimatter

Antimatter is much like normal matter, but its constituent particles carry the opposite electrical charge of their normal matter counterparts.

The anti-particle for the electron is the positron. It has the same mass as an electron, but it carries a positive charge instead of a negative charge.

The anti-particle for the proton is the antiproton. It has the same mass as a proton and a negative charge.

The anti-particle for the neutron is the antineutron. It has the same mass as a neutron and carries no charge.

If a particle of matter comes into contact with its anti-particle, both will "annihilate" each other, converting their combined mass into energy.

See Also

• Matter-antimatter annihilation